Comments on: Linux Copy One Hard Disk to Another Using dd Command

By: yashwanth

yashwanth — Tue, 14 Dec 2010 08:18:25 +0000

Hey, my question is something different.

I have a 55GB hard disk … but it has only 30 GB filled with partitions and remaining 25G I have not even extended,
now my question is if I have one more disk with 49GB hard disk … can I copy the 30GB data into the 49G disk … ?

pls reply me as soon as possible …. I need it very urgent ..!!

By: Ashrock

Ashrock — Mon, 15 Nov 2010 18:57:05 +0000

I have a external hard drive of 250GB capacity mounted on /mnt/sda2.
The device is at /dev/sda2.
So, if i want to copy the complete hard drive to take a backup using this dd command.
Do i have to unmount it first and then use dd command.
There are actually two partitions in the hard drive i want to copy.
One is of 5.5GB other is of 63GB.
Can i copy both using dd command, if so, would i be able to preserve the filesytem for later recovery.

Thanks.

By: Shams

Shams — Tue, 17 Aug 2010 04:16:06 +0000

I want to know the reply of Dorin’s question

By: Hmm

Hmm — Mon, 21 Sep 2009 01:21:21 +0000

GNU ddrescue is better, since it shows progress, won’t make any errors, and you can interrupt it without worry.

By: Arjan

Arjan — Thu, 03 Sep 2009 14:33:29 +0000

You can try to boot your system with a ubuntu live cd, and start the partition editor (gparted) when the system is booted. Or use a linux recovery cd

You should not resize a partition you are working on (=mounted)

By: Ashu

Ashu — Sat, 22 Aug 2009 20:23:47 +0000

Hi…

I was looking if any one can provide me the instructions on how to resize my linux hard disk (sda)

I am unable to perform wirte command after I making the changes in fdisk /dev/sda command.
Please help me out with this.

Thank you.
Ashu

By: Don Lassini

Don Lassini — Tue, 21 Jul 2009 15:53:48 +0000

You can copy a small disk to a larger disk, and then resize the partition with gparted.
You can also copy one partition from one disk to another, and then resize that partition afterwards.
e.g. dd if=/dev/sdb1 of=/dev/sdc1

Again, you can use gparted to resize the partition afterwards.

By: Kerem ERSOY

Kerem ERSOY — Sun, 19 Jul 2009 03:52:13 +0000

You can copy a smaller disk to alarger one. But initially the Filesyem over the large disk will be exactly s it is over the smaller disk. Then if you’re using ext2 / ext3 you can directly modify the partition size using resize2fs command. If you’re using LVM then you’ll need to expand LVM first.

By: Jeff

Jeff — Fri, 03 Jul 2009 03:19:14 +0000

you can dd one smaller hdd to one larger hdd, depending on the tools, you can then resize the partition to fit the entire new hdd

By: Dorin

Dorin — Sat, 20 Jun 2009 06:20:55 +0000

I guess we will have to try to copy one small disk to a bigger one.

By: Looo

Looo — Fri, 19 Jun 2009 12:41:43 +0000

I would also appreciate an answer please ….

By: Andy

Andy — Sun, 22 Feb 2009 11:03:44 +0000

I want to know the answer of Dorin’s question too. Thanks~~

By: Youpi

Youpi — Tue, 17 Feb 2009 22:23:50 +0000

please answer Dorin’s question…

By: Dorin

Dorin — Mon, 01 Sep 2008 06:58:47 +0000

Is is possible to copy one disc to another, a bigger one?

By: Anil Waghmare

Anil Waghmare — Tue, 05 Feb 2008 04:08:31 +0000

Hi,
Please check your steps. Instead of if & of you have written if twice